The total number of citations (ICI) until April, 2015 is more than 28000, 9 papers cited more than 400×, 1 over 1000×; value of Hirsch index amounts to 91; PH is most cited Czech scientist with highest value of Hirsch index; P.H. is ranked among the top 1% of researchers in the world for most cited documents, in the field of chemistry, 2014.